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Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
Meeting Spotlight
2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Fusion Science and Technology
Latest News
Tank waste operations resume at Idaho’s IWTU
The Department of Energy’s Office of Environmental Management announced yesterday that waste processing operations have resumed at the Integrated Waste Treatment Unit (IWTU) at the Idaho National Laboratory Site. The resumption of operations follows the completion of two maintenance campaigns at the radioactive liquid waste treatment facility.
A. Khodak, P. Titus, I. Zatz, A. Nagy, J. Winkelman, R. Nazikian, T. Scoville
Fusion Science and Technology | Volume 68 | Number 2 | September 2015 | Pages 373-377
Technical Paper | Proceedings of TOFE-2014 | doi.org/10.13182/FST14-951
Articles are hosted by Taylor and Francis Online.
The neutral beam copper pole shields currently in service at DIII-D have experienced localized melting and fatigue cracks in the grooves machined in the back of the copper plates. Higher power is now desired out of the neutral beams, requiring a pole shield upgrade to handle the elevated thermal load. The Princeton Plasma Physics Laboratory is responsible for the design and manufacturing of the pole shield upgrade.
Since the heat flux on the pole shield is highly localized, the new design includes a molybdenum insert, positioned in the area of the maximum thermal loading, mounted in the copper plate, which is cooled by a single cooling channel. A ten segment design was implemented, with loose tongue and groove connections, to allow in situ assembly and maintenance.
To validate the design, numerical simulations were performed using ANSYS workbench and consisted of two stages: 1. during the first stage unsteady fluid flow simulation was performed in conjunction with heat transfer analysis in the insert, copper plate, and water cooling system; 2. during the second stage, the temperature distribution was used to specify thermal strains, and perform transient structural analysis.